.box {
    height: 100%;

    a {
        border-bottom: 1px solid aqua;

        .box_title {
            width: 80px;
            height: 80px;
            float: left;

            img {
                width: 100%;
            }
        }

        .box_contnent {
            height: 100%;
            width: 315px;
            float: right;
            line-height: 1;
        }
    }
}